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Keep in mind that Google Index's everything that it can crawl. Even if you put a block in the robots.txt they will probably crawl it. You can require a password to that subdomain and keep big G out. This is easy to do if you have a site with cpanel access. Just go to manage permissions, and password protect that director with a .htaccess pw.
Maybe there is some way to wrap that text with a no follow tag? The same way you would add a no follow to a link.
Maybe there is some way to wrap that text with a no follow tag? The same way you would add a no follow to a link.